<template>
  <div>
    <!-- 主体部分 -->
    <section class="main">
      <input id="toggle-all" v-model="isChecked"  class="toggle-all" type="checkbox" />
      <label for="toggle-all">Mark all as complete</label>
      <ul class="todo-list" >
        <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
        <li :class="{completed :item.isDone}" v-for="item in list" :key="item.id">
          <div class="view">
            <input class="toggle" 
            type="checkbox" 
            :checked="item.isDone"
            @change = "changeStatus(item.id)"
            />
            <label>{{item.name}}</label>
            <button class="destroy" @click="del(item.id)"></button>
          </div>
        </li>
        
      </ul>
    </section>
  </div>
</template>

<script>


export default {
  name: 'TodoMain',
 props: {
  list : {
    type: Array,
    required :true
  }
 },
  data() {
    return {
    
    };
  },
  methods: {
    del(id) {
      this.$emit('delTask',id)
    },
    changeStatus(id) {
      this.$emit('hChange',id)

    }
  },
  computed: {
    isChecked: {
     get() {
      return this.list.every(item => item.isDone )
     },
     set(val) {
      this.$emit('select',val)
     }
    }
  }
};
</script>

<style>

</style>